Claude Opus 4.6 vs GPT-5.1 Instant: Specs & Benchmark Comparison
| Characteristic | Claude Opus 4.6 | GPT-5.1 Instant |
|---|---|---|
| Company | Anthropic | OpenAI |
| Release Date | February 4, 2026 | November 11, 2025 |
| Parameters | — | — |
| Multimodal | Yes | Yes |
| Context (input) | 1.0M | 256K |
| Context (output) | 128K | 32K |
| Input Price / 1M | $5.00 | $0.30 |
| Output Price / 1M | $25.00 | $1.20 |
| Average Score | 0.8 | 0.9 |
| Benchmarks | ||
| AIME 2025 | 1.0 | 0.9 |
| GPQA | 0.9 | 0.9 |
| TAU2 Telecom | 1.0 | 1.0 |
| SWE-Bench Verified | 0.8 | 0.8 |
Visual Benchmark Comparison
Claude Opus 4.6
GPT-5.1 Instant
AIME 20251.0 vs 0.9
1.0
0.9
GPQA0.9 vs 0.9
0.9
0.9
TAU2 Telecom1.0 vs 1.0
1.0
1.0
SWE-Bench Verified0.8 vs 0.8
0.8
0.8
Verdict
Claude Opus 4.6 leads in 2 out of 5 comparison categories.
Overall Performance
Both models show comparable average scores: Claude Opus 4.6 — 0.8, GPT-5.1 Instant — 0.9.
Programming
On SWE-Bench, both models are nearly equal: Claude Opus 4.6 — 0.8, GPT-5.1 Instant — 0.8.
API Cost
GPT-5.1 Instant is 20.0x cheaper: input $0.30/1M vs $5.00/1M tokens.
Context Window
Claude Opus 4.6 supports a larger context: 1M vs 256K tokens.
Recency
Claude Opus 4.6 is newer: released 2/4/2026 vs 11/11/2025.
More About These Models
Related Comparisons
The Claude Opus 4.6 and GPT-5.1 Instant comparison is updated for 2026. Data includes benchmark results, API pricing, context window size and other specifications. For more detailed information, visit the Claude Opus 4.6 or GPT-5.1 Instant page. See also the complete list of AI model comparisons.